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src/hotspot/share/oops/access.inline.hpp
erik_version
roman_version
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
! #ifndef SHARE_VM_RUNTIME_ACCESS_INLINE_HPP
! #define SHARE_VM_RUNTIME_ACCESS_INLINE_HPP
#include "gc/shared/barrierSetConfig.inline.hpp"
- #include "metaprogramming/conditional.hpp"
- #include "metaprogramming/isFloatingPoint.hpp"
- #include "metaprogramming/isIntegral.hpp"
- #include "metaprogramming/isPointer.hpp"
- #include "metaprogramming/isVolatile.hpp"
#include "oops/access.hpp"
#include "oops/accessBackend.inline.hpp"
- #include "runtime/atomic.hpp"
- #include "runtime/orderAccess.inline.hpp"
! // This file outlines the template pipeline of accesses going through the Access
! // API. There are essentially 5 steps for each access.
! // * Step 1: Set default decorators and decay types. This step gets rid of CV qualifiers
! // and sets default decorators to sensible values.
! // * Step 2: Reduce types. This step makes sure there is only a single T type and not
! // multiple types. The P type of the address and T type of the value must
! // match.
! // * Step 3: Pre-runtime dispatch. This step checks whether a runtime call can be
! // avoided, and in that case avoids it (calling raw accesses or
! // primitive accesses in a build that does not require primitive GC barriers)
! // * Step 4: Runtime-dispatch. This step performs a runtime dispatch to the corresponding
! // BarrierSet::AccessBarrier accessor that attaches GC-required barriers
! // to the access.
! // * Step 5: Post-runtime dispatch. This step now casts previously unknown types such
! // as the address type of an oop on the heap (is it oop* or narrowOop*) to
! // the appropriate type. It also splits sufficiently orthogonal accesses into
! // different functions, such as whether the access involves oops or primitives
! // and whether the access is performed on the heap or outside. Then the
! // appropriate BarrierSet::AccessBarrier is called to perform the access.
namespace AccessInternal {
!
! // Step 5: Post-runtime dispatch.
// This class is the last step before calling the BarrierSet::AccessBarrier.
// Here we make sure to figure out types that were not known prior to the
// runtime dispatch, such as whether an oop on the heap is oop or narrowOop.
// We also split orthogonal barriers such as handling primitives vs oops
// and on-heap vs off-heap into different calls to the barrier set.
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
! #ifndef SHARE_OOPS_ACCESS_INLINE_HPP
! #define SHARE_OOPS_ACCESS_INLINE_HPP
#include "gc/shared/barrierSetConfig.inline.hpp"
#include "oops/access.hpp"
#include "oops/accessBackend.inline.hpp"
! // This file outlines the last 2 steps of the template pipeline of accesses going through
! // the Access API.
! // * Step 5.a: Barrier resolution. This step is invoked the first time a runtime-dispatch
! // happens for an access. The appropriate BarrierSet::AccessBarrier accessor
! // is resolved, then the function pointer is updated to that accessor for
! // future invocations.
! // * Step 5.b: Post-runtime dispatch. This step now casts previously unknown types such
! // as the address type of an oop on the heap (is it oop* or narrowOop*) to
! // the appropriate type. It also splits sufficiently orthogonal accesses into
! // different functions, such as whether the access involves oops or primitives
! // and whether the access is performed on the heap or outside. Then the
! // appropriate BarrierSet::AccessBarrier is called to perform the access.
namespace AccessInternal {
! // Step 5.b: Post-runtime dispatch.
// This class is the last step before calling the BarrierSet::AccessBarrier.
// Here we make sure to figure out types that were not known prior to the
// runtime dispatch, such as whether an oop on the heap is oop or narrowOop.
// We also split orthogonal barriers such as handling primitives vs oops
// and on-heap vs off-heap into different calls to the barrier set.
***************
static oop access_barrier(oop obj) {
return GCBarrierType::resolve(obj);
}
};
+ template <class GCBarrierType, DecoratorSet decorators>
+ struct PostRuntimeDispatch<GCBarrierType, BARRIER_EQUALS, decorators>: public AllStatic {
+ static bool access_barrier(oop o1, oop o2) {
+ return GCBarrierType::equals(o1, o2);
+ }
+ };
+
// Resolving accessors with barriers from the barrier set happens in two steps.
// 1. Expand paths with runtime-decorators, e.g. is UseCompressedOops on or off.
// 2. Expand paths for each BarrierSet available in the system.
template <DecoratorSet decorators, typename FunctionPointerT, BarrierType barrier_type>
struct BarrierResolver: public AllStatic {
***************
static FunctionPointerT resolve_barrier() {
return resolve_barrier_rt();
}
};
! // Step 4: Runtime dispatch
// The RuntimeDispatch class is responsible for performing a runtime dispatch of the
// accessor. This is required when the access either depends on whether compressed oops
// is being used, or it depends on which GC implementation was chosen (e.g. requires GC
// barriers). The way it works is that a function pointer initially pointing to an
// accessor resolution function gets called for each access. Upon first invocation,
// it resolves which accessor to be used in future invocations and patches the
// function pointer to this new accessor.
- template <DecoratorSet decorators, typename T, BarrierType type>
- struct RuntimeDispatch: AllStatic {};
-
- template <DecoratorSet decorators, typename T>
- struct RuntimeDispatch<decorators, T, BARRIER_STORE>: AllStatic {
- typedef typename AccessFunction<decorators, T, BARRIER_STORE>::type func_t;
- static func_t _store_func;
-
- static void store_init(void* addr, T value) {
- func_t function = BarrierResolver<decorators, func_t, BARRIER_STORE>::resolve_barrier();
- _store_func = function;
- function(addr, value);
- }
-
- static inline void store(void* addr, T value) {
- _store_func(addr, value);
- }
- };
-
- template <DecoratorSet decorators, typename T>
- struct RuntimeDispatch<decorators, T, BARRIER_STORE_AT>: AllStatic {
- typedef typename AccessFunction<decorators, T, BARRIER_STORE_AT>::type func_t;
- static func_t _store_at_func;
-
- static void store_at_init(oop base, ptrdiff_t offset, T value) {
- func_t function = BarrierResolver<decorators, func_t, BARRIER_STORE_AT>::resolve_barrier();
- _store_at_func = function;
- function(base, offset, value);
- }
-
- static inline void store_at(oop base, ptrdiff_t offset, T value) {
- _store_at_func(base, offset, value);
- }
- };
-
- template <DecoratorSet decorators, typename T>
- struct RuntimeDispatch<decorators, T, BARRIER_LOAD>: AllStatic {
- typedef typename AccessFunction<decorators, T, BARRIER_LOAD>::type func_t;
- static func_t _load_func;
-
- static T load_init(void* addr) {
- func_t function = BarrierResolver<decorators, func_t, BARRIER_LOAD>::resolve_barrier();
- _load_func = function;
- return function(addr);
- }
-
- static inline T load(void* addr) {
- return _load_func(addr);
- }
- };
-
- template <DecoratorSet decorators, typename T>
- struct RuntimeDispatch<decorators, T, BARRIER_LOAD_AT>: AllStatic {
- typedef typename AccessFunction<decorators, T, BARRIER_LOAD_AT>::type func_t;
- static func_t _load_at_func;
-
- static T load_at_init(oop base, ptrdiff_t offset) {
- func_t function = BarrierResolver<decorators, func_t, BARRIER_LOAD_AT>::resolve_barrier();
- _load_at_func = function;
- return function(base, offset);
- }
-
- static inline T load_at(oop base, ptrdiff_t offset) {
- return _load_at_func(base, offset);
- }
- };
-
- template <DecoratorSet decorators, typename T>
- struct RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG>: AllStatic {
- typedef typename AccessFunction<decorators, T, BARRIER_ATOMIC_CMPXCHG>::type func_t;
- static func_t _atomic_cmpxchg_func;
-
- static T atomic_cmpxchg_init(T new_value, void* addr, T compare_value) {
- func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_CMPXCHG>::resolve_barrier();
- _atomic_cmpxchg_func = function;
- return function(new_value, addr, compare_value);
- }
-
- static inline T atomic_cmpxchg(T new_value, void* addr, T compare_value) {
- return _atomic_cmpxchg_func(new_value, addr, compare_value);
- }
- };
-
template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>::type func_t;
! static func_t _atomic_cmpxchg_at_func;
!
! static T atomic_cmpxchg_at_init(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_CMPXCHG_AT>::resolve_barrier();
! _atomic_cmpxchg_at_func = function;
! return function(new_value, base, offset, compare_value);
! }
!
! static inline T atomic_cmpxchg_at(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! return _atomic_cmpxchg_at_func(new_value, base, offset, compare_value);
! }
! };
!
! template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_ATOMIC_XCHG>::type func_t;
! static func_t _atomic_xchg_func;
!
! static T atomic_xchg_init(T new_value, void* addr) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_XCHG>::resolve_barrier();
! _atomic_xchg_func = function;
! return function(new_value, addr);
! }
!
! static inline T atomic_xchg(T new_value, void* addr) {
! return _atomic_xchg_func(new_value, addr);
! }
! };
!
! template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG_AT>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_ATOMIC_XCHG_AT>::type func_t;
! static func_t _atomic_xchg_at_func;
!
! static T atomic_xchg_at_init(T new_value, oop base, ptrdiff_t offset) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_XCHG_AT>::resolve_barrier();
! _atomic_xchg_at_func = function;
! return function(new_value, base, offset);
! }
!
! static inline T atomic_xchg_at(T new_value, oop base, ptrdiff_t offset) {
! return _atomic_xchg_at_func(new_value, base, offset);
! }
! };
!
! template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_ARRAYCOPY>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_ARRAYCOPY>::type func_t;
! static func_t _arraycopy_func;
!
! static bool arraycopy_init(arrayOop src_obj, arrayOop dst_obj, T *src, T* dst, size_t length) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ARRAYCOPY>::resolve_barrier();
! _arraycopy_func = function;
! return function(src_obj, dst_obj, src, dst, length);
! }
!
! static inline bool arraycopy(arrayOop src_obj, arrayOop dst_obj, T *src, T* dst, size_t length) {
! return _arraycopy_func(src_obj, dst_obj, src, dst, length);
! }
! };
!
! template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_CLONE>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_CLONE>::type func_t;
! static func_t _clone_func;
!
! static void clone_init(oop src, oop dst, size_t size) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_CLONE>::resolve_barrier();
! _clone_func = function;
! function(src, dst, size);
! }
!
! static inline void clone(oop src, oop dst, size_t size) {
! _clone_func(src, dst, size);
! }
! };
!
! template <DecoratorSet decorators, typename T>
! struct RuntimeDispatch<decorators, T, BARRIER_RESOLVE>: AllStatic {
! typedef typename AccessFunction<decorators, T, BARRIER_RESOLVE>::type func_t;
! static func_t _resolve_func;
!
! static oop resolve_init(oop obj) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_RESOLVE>::resolve_barrier();
! _resolve_func = function;
! return function(obj);
! }
!
! static inline oop resolve(oop obj) {
! return _resolve_func(obj);
! }
! };
!
! // Initialize the function pointers to point to the resolving function.
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_STORE>::type
! RuntimeDispatch<decorators, T, BARRIER_STORE>::_store_func = &store_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_STORE_AT>::type
! RuntimeDispatch<decorators, T, BARRIER_STORE_AT>::_store_at_func = &store_at_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_LOAD>::type
! RuntimeDispatch<decorators, T, BARRIER_LOAD>::_load_func = &load_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_LOAD_AT>::type
! RuntimeDispatch<decorators, T, BARRIER_LOAD_AT>::_load_at_func = &load_at_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_ATOMIC_CMPXCHG>::type
! RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG>::_atomic_cmpxchg_func = &atomic_cmpxchg_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>::type
! RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>::_atomic_cmpxchg_at_func = &atomic_cmpxchg_at_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_ATOMIC_XCHG>::type
! RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG>::_atomic_xchg_func = &atomic_xchg_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_ATOMIC_XCHG_AT>::type
! RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG_AT>::_atomic_xchg_at_func = &atomic_xchg_at_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_ARRAYCOPY>::type
! RuntimeDispatch<decorators, T, BARRIER_ARRAYCOPY>::_arraycopy_func = &arraycopy_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_CLONE>::type
! RuntimeDispatch<decorators, T, BARRIER_CLONE>::_clone_func = &clone_init;
!
! template <DecoratorSet decorators, typename T>
! typename AccessFunction<decorators, T, BARRIER_RESOLVE>::type
! RuntimeDispatch<decorators, T, BARRIER_RESOLVE>::_resolve_func = &resolve_init;
!
! // Step 3: Pre-runtime dispatching.
! // The PreRuntimeDispatch class is responsible for filtering the barrier strength
! // decorators. That is, for AS_RAW, it hardwires the accesses without a runtime
! // dispatch point. Otherwise it goes through a runtime check if hardwiring was
! // not possible.
! struct PreRuntimeDispatch: AllStatic {
! template<DecoratorSet decorators>
! struct CanHardwireRaw: public IntegralConstant<
! bool,
! !HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value || // primitive access
! !HasDecorator<decorators, INTERNAL_CONVERT_COMPRESSED_OOP>::value || // don't care about compressed oops (oop* address)
! HasDecorator<decorators, INTERNAL_RT_USE_COMPRESSED_OOPS>::value> // we can infer we use compressed oops (narrowOop* address)
! {};
!
! static const DecoratorSet convert_compressed_oops = INTERNAL_RT_USE_COMPRESSED_OOPS | INTERNAL_CONVERT_COMPRESSED_OOP;
!
! template<DecoratorSet decorators>
! static bool is_hardwired_primitive() {
! return !HasDecorator<decorators, INTERNAL_BT_BARRIER_ON_PRIMITIVES>::value &&
! !HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value;
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && CanHardwireRaw<decorators>::value>::type
! store(void* addr, T value) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! if (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value) {
! Raw::oop_store(addr, value);
! } else {
! Raw::store(addr, value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && !CanHardwireRaw<decorators>::value>::type
! store(void* addr, T value) {
! if (UseCompressedOops) {
! const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
! } else {
! const DecoratorSet expanded_decorators = decorators & ~convert_compressed_oops;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value>::type
! store(void* addr, T value) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
! } else {
! RuntimeDispatch<decorators, T, BARRIER_STORE>::store(addr, value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value>::type
! store_at(oop base, ptrdiff_t offset, T value) {
! store<decorators>(field_addr(base, offset), value);
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value>::type
! store_at(oop base, ptrdiff_t offset, T value) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! PreRuntimeDispatch::store_at<expanded_decorators>(base, offset, value);
! } else {
! RuntimeDispatch<decorators, T, BARRIER_STORE_AT>::store_at(base, offset, value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && CanHardwireRaw<decorators>::value, T>::type
! load(void* addr) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! if (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value) {
! return Raw::template oop_load<T>(addr);
! } else {
! return Raw::template load<T>(addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && !CanHardwireRaw<decorators>::value, T>::type
! load(void* addr) {
! if (UseCompressedOops) {
! const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
! return PreRuntimeDispatch::load<expanded_decorators, T>(addr);
! } else {
! const DecoratorSet expanded_decorators = decorators & ~convert_compressed_oops;
! return PreRuntimeDispatch::load<expanded_decorators, T>(addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! load(void* addr) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::load<expanded_decorators, T>(addr);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_LOAD>::load(addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value, T>::type
! load_at(oop base, ptrdiff_t offset) {
! return load<decorators, T>(field_addr(base, offset));
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! load_at(oop base, ptrdiff_t offset) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::load_at<expanded_decorators, T>(base, offset);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_LOAD_AT>::load_at(base, offset);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && CanHardwireRaw<decorators>::value, T>::type
! atomic_cmpxchg(T new_value, void* addr, T compare_value) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! if (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value) {
! return Raw::oop_atomic_cmpxchg(new_value, addr, compare_value);
! } else {
! return Raw::atomic_cmpxchg(new_value, addr, compare_value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && !CanHardwireRaw<decorators>::value, T>::type
! atomic_cmpxchg(T new_value, void* addr, T compare_value) {
! if (UseCompressedOops) {
! const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
! } else {
! const DecoratorSet expanded_decorators = decorators & ~convert_compressed_oops;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_cmpxchg(T new_value, void* addr, T compare_value) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG>::atomic_cmpxchg(new_value, addr, compare_value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_cmpxchg_at(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! return atomic_cmpxchg<decorators>(new_value, field_addr(base, offset), compare_value);
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_cmpxchg_at(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::atomic_cmpxchg_at<expanded_decorators>(new_value, base, offset, compare_value);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>::atomic_cmpxchg_at(new_value, base, offset, compare_value);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && CanHardwireRaw<decorators>::value, T>::type
! atomic_xchg(T new_value, void* addr) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! if (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value) {
! return Raw::oop_atomic_xchg(new_value, addr);
! } else {
! return Raw::atomic_xchg(new_value, addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && !CanHardwireRaw<decorators>::value, T>::type
! atomic_xchg(T new_value, void* addr) {
! if (UseCompressedOops) {
! const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! } else {
! const DecoratorSet expanded_decorators = decorators & ~convert_compressed_oops;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_xchg(T new_value, void* addr) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG>::atomic_xchg(new_value, addr);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_xchg_at(T new_value, oop base, ptrdiff_t offset) {
! return atomic_xchg<decorators>(new_value, field_addr(base, offset));
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, T>::type
! atomic_xchg_at(T new_value, oop base, ptrdiff_t offset) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, base, offset);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG_AT>::atomic_xchg_at(new_value, base, offset);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && CanHardwireRaw<decorators>::value, bool>::type
! arraycopy(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! if (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value) {
! return Raw::oop_arraycopy(src_obj, dst_obj, src, dst, length);
! } else {
! return Raw::arraycopy(src_obj, dst_obj, src, dst, length);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value && !CanHardwireRaw<decorators>::value, bool>::type
! arraycopy(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {
! if (UseCompressedOops) {
! const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
! return PreRuntimeDispatch::arraycopy<expanded_decorators>(src_obj, dst_obj, src, dst, length);
! } else {
! const DecoratorSet expanded_decorators = decorators & ~convert_compressed_oops;
! return PreRuntimeDispatch::arraycopy<expanded_decorators>(src_obj, dst_obj, src, dst, length);
! }
! }
!
! template <DecoratorSet decorators, typename T>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value, bool>::type
! arraycopy(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {
! if (is_hardwired_primitive<decorators>()) {
! const DecoratorSet expanded_decorators = decorators | AS_RAW;
! return PreRuntimeDispatch::arraycopy<expanded_decorators>(src_obj, dst_obj, src, dst, length);
! } else {
! return RuntimeDispatch<decorators, T, BARRIER_ARRAYCOPY>::arraycopy(src_obj, dst_obj, src, dst, length);
! }
! }
!
! template <DecoratorSet decorators>
! inline static typename EnableIf<
! HasDecorator<decorators, AS_RAW>::value>::type
! clone(oop src, oop dst, size_t size) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! Raw::clone(src, dst, size);
! }
!
! template <DecoratorSet decorators>
! inline static typename EnableIf<
! !HasDecorator<decorators, AS_RAW>::value>::type
! clone(oop src, oop dst, size_t size) {
! RuntimeDispatch<decorators, oop, BARRIER_CLONE>::clone(src, dst, size);
! }
!
! template <DecoratorSet decorators>
! inline static typename EnableIf<
! HasDecorator<decorators, INTERNAL_BT_TO_SPACE_INVARIANT>::value, oop>::type
! resolve(oop obj) {
! typedef RawAccessBarrier<decorators & RAW_DECORATOR_MASK> Raw;
! return Raw::resolve(obj);
! }
!
! template <DecoratorSet decorators>
! inline static typename EnableIf<
! !HasDecorator<decorators, INTERNAL_BT_TO_SPACE_INVARIANT>::value, oop>::type
! resolve(oop obj) {
! return RuntimeDispatch<decorators, oop, BARRIER_RESOLVE>::resolve(obj);
! }
! };
!
! // This class adds implied decorators that follow according to decorator rules.
! // For example adding default reference strength and default memory ordering
! // semantics.
! template <DecoratorSet input_decorators>
! struct DecoratorFixup: AllStatic {
! // If no reference strength has been picked, then strong will be picked
! static const DecoratorSet ref_strength_default = input_decorators |
! (((ON_DECORATOR_MASK & input_decorators) == 0 && (INTERNAL_VALUE_IS_OOP & input_decorators) != 0) ?
! ON_STRONG_OOP_REF : INTERNAL_EMPTY);
! // If no memory ordering has been picked, unordered will be picked
! static const DecoratorSet memory_ordering_default = ref_strength_default |
! ((MO_DECORATOR_MASK & ref_strength_default) == 0 ? MO_UNORDERED : INTERNAL_EMPTY);
! // If no barrier strength has been picked, normal will be used
! static const DecoratorSet barrier_strength_default = memory_ordering_default |
! ((AS_DECORATOR_MASK & memory_ordering_default) == 0 ? AS_NORMAL : INTERNAL_EMPTY);
! // Heap array accesses imply it is a heap access
! static const DecoratorSet heap_array_is_in_heap = barrier_strength_default |
! ((IN_HEAP_ARRAY & barrier_strength_default) != 0 ? IN_HEAP : INTERNAL_EMPTY);
! static const DecoratorSet conc_root_is_root = heap_array_is_in_heap |
! ((IN_CONCURRENT_ROOT & heap_array_is_in_heap) != 0 ? IN_ROOT : INTERNAL_EMPTY);
! static const DecoratorSet archive_root_is_root = conc_root_is_root |
! ((IN_ARCHIVE_ROOT & conc_root_is_root) != 0 ? IN_ROOT : INTERNAL_EMPTY);
! static const DecoratorSet value = archive_root_is_root | BT_BUILDTIME_DECORATORS;
! };
!
! // Step 2: Reduce types.
! // Enforce that for non-oop types, T and P have to be strictly the same.
! // P is the type of the address and T is the type of the values.
! // As for oop types, it is allow to send T in {narrowOop, oop} and
! // P in {narrowOop, oop, HeapWord*}. The following rules apply according to
! // the subsequent table. (columns are P, rows are T)
! // | | HeapWord | oop | narrowOop |
! // | oop | rt-comp | hw-none | hw-comp |
! // | narrowOop | x | x | hw-none |
! //
! // x means not allowed
! // rt-comp means it must be checked at runtime whether the oop is compressed.
! // hw-none means it is statically known the oop will not be compressed.
! // hw-comp means it is statically known the oop will be compressed.
!
! template <DecoratorSet decorators, typename T>
! inline void store_reduce_types(T* addr, T value) {
! PreRuntimeDispatch::store<decorators>(addr, value);
! }
!
! template <DecoratorSet decorators>
! inline void store_reduce_types(narrowOop* addr, oop value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
! }
!
! template <DecoratorSet decorators>
! inline void store_reduce_types(narrowOop* addr, narrowOop value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
! }
!
! template <DecoratorSet decorators>
! inline void store_reduce_types(HeapWord* addr, oop value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
! PreRuntimeDispatch::store<expanded_decorators>(addr, value);
}
template <DecoratorSet decorators, typename T>
! inline T atomic_cmpxchg_reduce_types(T new_value, T* addr, T compare_value) {
! return PreRuntimeDispatch::atomic_cmpxchg<decorators>(new_value, addr, compare_value);
! }
!
! template <DecoratorSet decorators>
! inline oop atomic_cmpxchg_reduce_types(oop new_value, narrowOop* addr, oop compare_value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
! }
!
! template <DecoratorSet decorators>
! inline narrowOop atomic_cmpxchg_reduce_types(narrowOop new_value, narrowOop* addr, narrowOop compare_value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
! }
!
! template <DecoratorSet decorators>
! inline oop atomic_cmpxchg_reduce_types(oop new_value,
! HeapWord* addr,
! oop compare_value) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
! return PreRuntimeDispatch::atomic_cmpxchg<expanded_decorators>(new_value, addr, compare_value);
}
template <DecoratorSet decorators, typename T>
! inline T atomic_xchg_reduce_types(T new_value, T* addr) {
! const DecoratorSet expanded_decorators = decorators;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! }
!
! template <DecoratorSet decorators>
! inline oop atomic_xchg_reduce_types(oop new_value, narrowOop* addr) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! }
!
! template <DecoratorSet decorators>
! inline narrowOop atomic_xchg_reduce_types(narrowOop new_value, narrowOop* addr) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! }
!
! template <DecoratorSet decorators>
! inline oop atomic_xchg_reduce_types(oop new_value, HeapWord* addr) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
! return PreRuntimeDispatch::atomic_xchg<expanded_decorators>(new_value, addr);
! }
!
! template <DecoratorSet decorators, typename T>
! inline T load_reduce_types(T* addr) {
! return PreRuntimeDispatch::load<decorators, T>(addr);
}
template <DecoratorSet decorators, typename T>
! inline typename OopOrNarrowOop<T>::type load_reduce_types(narrowOop* addr) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
! INTERNAL_RT_USE_COMPRESSED_OOPS;
! return PreRuntimeDispatch::load<expanded_decorators, typename OopOrNarrowOop<T>::type>(addr);
}
template <DecoratorSet decorators, typename T>
! inline oop load_reduce_types(HeapWord* addr) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
! return PreRuntimeDispatch::load<expanded_decorators, oop>(addr);
}
template <DecoratorSet decorators, typename T>
! inline bool arraycopy_reduce_types(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {
! return PreRuntimeDispatch::arraycopy<decorators>(src_obj, dst_obj, src, dst, length);
! }
!
! template <DecoratorSet decorators>
! inline bool arraycopy_reduce_types(arrayOop src_obj, arrayOop dst_obj, HeapWord* src, HeapWord* dst, size_t length) {
! const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
! return PreRuntimeDispatch::arraycopy<expanded_decorators>(src_obj, dst_obj, src, dst, length);
}
- template <DecoratorSet decorators>
- inline bool arraycopy_reduce_types(arrayOop src_obj, arrayOop dst_obj, narrowOop* src, narrowOop* dst, size_t length) {
- const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
- INTERNAL_RT_USE_COMPRESSED_OOPS;
- return PreRuntimeDispatch::arraycopy<expanded_decorators>(src_obj, dst_obj, src, dst, length);
- }
-
- // Step 1: Set default decorators. This step remembers if a type was volatile
- // and then sets the MO_VOLATILE decorator by default. Otherwise, a default
- // memory ordering is set for the access, and the implied decorator rules
- // are applied to select sensible defaults for decorators that have not been
- // explicitly set. For example, default object referent strength is set to strong.
- // This step also decays the types passed in (e.g. getting rid of CV qualifiers
- // and references from the types). This step also perform some type verification
- // that the passed in types make sense.
-
template <DecoratorSet decorators, typename T>
! static void verify_types(){
! // If this fails to compile, then you have sent in something that is
! // not recognized as a valid primitive type to a primitive Access function.
! STATIC_ASSERT((HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value || // oops have already been validated
! (IsPointer<T>::value || IsIntegral<T>::value) ||
! IsFloatingPoint<T>::value)); // not allowed primitive type
! }
!
! template <DecoratorSet decorators, typename P, typename T>
! inline void store(P* addr, T value) {
! verify_types<decorators, T>();
! typedef typename Decay<P>::type DecayedP;
! typedef typename Decay<T>::type DecayedT;
! DecayedT decayed_value = value;
! // If a volatile address is passed in but no memory ordering decorator,
! // set the memory ordering to MO_VOLATILE by default.
! const DecoratorSet expanded_decorators = DecoratorFixup<
! (IsVolatile<P>::value && !HasDecorator<decorators, MO_DECORATOR_MASK>::value) ?
! (MO_VOLATILE | decorators) : decorators>::value;
! store_reduce_types<expanded_decorators>(const_cast<DecayedP*>(addr), decayed_value);
}
template <DecoratorSet decorators, typename T>
! inline void store_at(oop base, ptrdiff_t offset, T value) {
! verify_types<decorators, T>();
! typedef typename Decay<T>::type DecayedT;
! DecayedT decayed_value = value;
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators |
! (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value ?
! INTERNAL_CONVERT_COMPRESSED_OOP : INTERNAL_EMPTY)>::value;
! PreRuntimeDispatch::store_at<expanded_decorators>(base, offset, decayed_value);
! }
!
! template <DecoratorSet decorators, typename P, typename T>
! inline T load(P* addr) {
! verify_types<decorators, T>();
! typedef typename Decay<P>::type DecayedP;
! typedef typename Conditional<HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value,
! typename OopOrNarrowOop<T>::type,
! typename Decay<T>::type>::type DecayedT;
! // If a volatile address is passed in but no memory ordering decorator,
! // set the memory ordering to MO_VOLATILE by default.
! const DecoratorSet expanded_decorators = DecoratorFixup<
! (IsVolatile<P>::value && !HasDecorator<decorators, MO_DECORATOR_MASK>::value) ?
! (MO_VOLATILE | decorators) : decorators>::value;
! return load_reduce_types<expanded_decorators, DecayedT>(const_cast<DecayedP*>(addr));
}
template <DecoratorSet decorators, typename T>
! inline T load_at(oop base, ptrdiff_t offset) {
! verify_types<decorators, T>();
! typedef typename Conditional<HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value,
! typename OopOrNarrowOop<T>::type,
! typename Decay<T>::type>::type DecayedT;
! // Expand the decorators (figure out sensible defaults)
! // Potentially remember if we need compressed oop awareness
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators |
! (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value ?
! INTERNAL_CONVERT_COMPRESSED_OOP : INTERNAL_EMPTY)>::value;
! return PreRuntimeDispatch::load_at<expanded_decorators, DecayedT>(base, offset);
! }
!
! template <DecoratorSet decorators, typename P, typename T>
! inline T atomic_cmpxchg(T new_value, P* addr, T compare_value) {
! verify_types<decorators, T>();
! typedef typename Decay<P>::type DecayedP;
! typedef typename Decay<T>::type DecayedT;
! DecayedT new_decayed_value = new_value;
! DecayedT compare_decayed_value = compare_value;
! const DecoratorSet expanded_decorators = DecoratorFixup<
! (!HasDecorator<decorators, MO_DECORATOR_MASK>::value) ?
! (MO_SEQ_CST | decorators) : decorators>::value;
! return atomic_cmpxchg_reduce_types<expanded_decorators>(new_decayed_value,
! const_cast<DecayedP*>(addr),
! compare_decayed_value);
}
template <DecoratorSet decorators, typename T>
! inline T atomic_cmpxchg_at(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! verify_types<decorators, T>();
! typedef typename Decay<T>::type DecayedT;
! DecayedT new_decayed_value = new_value;
! DecayedT compare_decayed_value = compare_value;
! // Determine default memory ordering
! const DecoratorSet expanded_decorators = DecoratorFixup<
! (!HasDecorator<decorators, MO_DECORATOR_MASK>::value) ?
! (MO_SEQ_CST | decorators) : decorators>::value;
! // Potentially remember that we need compressed oop awareness
! const DecoratorSet final_decorators = expanded_decorators |
! (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value ?
! INTERNAL_CONVERT_COMPRESSED_OOP : INTERNAL_EMPTY);
! return PreRuntimeDispatch::atomic_cmpxchg_at<final_decorators>(new_decayed_value, base,
! offset, compare_decayed_value);
! }
!
! template <DecoratorSet decorators, typename P, typename T>
! inline T atomic_xchg(T new_value, P* addr) {
! verify_types<decorators, T>();
! typedef typename Decay<P>::type DecayedP;
! typedef typename Decay<T>::type DecayedT;
! DecayedT new_decayed_value = new_value;
! // atomic_xchg is only available in SEQ_CST flavour.
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators | MO_SEQ_CST>::value;
! return atomic_xchg_reduce_types<expanded_decorators>(new_decayed_value,
! const_cast<DecayedP*>(addr));
}
template <DecoratorSet decorators, typename T>
! inline T atomic_xchg_at(T new_value, oop base, ptrdiff_t offset) {
! verify_types<decorators, T>();
! typedef typename Decay<T>::type DecayedT;
! DecayedT new_decayed_value = new_value;
! // atomic_xchg is only available in SEQ_CST flavour.
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators | MO_SEQ_CST |
! (HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value ?
! INTERNAL_CONVERT_COMPRESSED_OOP : INTERNAL_EMPTY)>::value;
! return PreRuntimeDispatch::atomic_xchg_at<expanded_decorators>(new_decayed_value, base, offset);
}
template <DecoratorSet decorators, typename T>
! inline bool arraycopy(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {
! STATIC_ASSERT((HasDecorator<decorators, INTERNAL_VALUE_IS_OOP>::value ||
! (IsSame<T, void>::value || IsIntegral<T>::value) ||
! IsFloatingPoint<T>::value)); // arraycopy allows type erased void elements
! typedef typename Decay<T>::type DecayedT;
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators | IN_HEAP_ARRAY | IN_HEAP>::value;
! return arraycopy_reduce_types<expanded_decorators>(src_obj, dst_obj,
! const_cast<DecayedT*>(src),
! const_cast<DecayedT*>(dst),
! length);
! }
!
! template <DecoratorSet decorators>
! inline void clone(oop src, oop dst, size_t size) {
! const DecoratorSet expanded_decorators = DecoratorFixup<decorators>::value;
! PreRuntimeDispatch::clone<expanded_decorators>(src, dst, size);
}
-
- template <DecoratorSet decorators>
- inline oop resolve(oop obj) {
- const DecoratorSet expanded_decorators = DecoratorFixup<decorators>::value;
- return PreRuntimeDispatch::resolve<expanded_decorators>(obj);
- }
- }
-
- template <DecoratorSet decorators>
- template <DecoratorSet expected_decorators>
- void Access<decorators>::verify_decorators() {
- STATIC_ASSERT((~expected_decorators & decorators) == 0); // unexpected decorator used
- const DecoratorSet barrier_strength_decorators = decorators & AS_DECORATOR_MASK;
- STATIC_ASSERT(barrier_strength_decorators == 0 || ( // make sure barrier strength decorators are disjoint if set
- (barrier_strength_decorators ^ AS_NO_KEEPALIVE) == 0 ||
- (barrier_strength_decorators ^ AS_DEST_NOT_INITIALIZED) == 0 ||
- (barrier_strength_decorators ^ AS_RAW) == 0 ||
- (barrier_strength_decorators ^ AS_NORMAL) == 0
- ));
- const DecoratorSet ref_strength_decorators = decorators & ON_DECORATOR_MASK;
- STATIC_ASSERT(ref_strength_decorators == 0 || ( // make sure ref strength decorators are disjoint if set
- (ref_strength_decorators ^ ON_STRONG_OOP_REF) == 0 ||
- (ref_strength_decorators ^ ON_WEAK_OOP_REF) == 0 ||
- (ref_strength_decorators ^ ON_PHANTOM_OOP_REF) == 0 ||
- (ref_strength_decorators ^ ON_UNKNOWN_OOP_REF) == 0
- ));
- const DecoratorSet memory_ordering_decorators = decorators & MO_DECORATOR_MASK;
- STATIC_ASSERT(memory_ordering_decorators == 0 || ( // make sure memory ordering decorators are disjoint if set
- (memory_ordering_decorators ^ MO_UNORDERED) == 0 ||
- (memory_ordering_decorators ^ MO_VOLATILE) == 0 ||
- (memory_ordering_decorators ^ MO_RELAXED) == 0 ||
- (memory_ordering_decorators ^ MO_ACQUIRE) == 0 ||
- (memory_ordering_decorators ^ MO_RELEASE) == 0 ||
- (memory_ordering_decorators ^ MO_SEQ_CST) == 0
- ));
- const DecoratorSet location_decorators = decorators & IN_DECORATOR_MASK;
- STATIC_ASSERT(location_decorators == 0 || ( // make sure location decorators are disjoint if set
- (location_decorators ^ IN_ROOT) == 0 ||
- (location_decorators ^ IN_HEAP) == 0 ||
- (location_decorators ^ (IN_HEAP | IN_HEAP_ARRAY)) == 0 ||
- (location_decorators ^ (IN_ROOT | IN_CONCURRENT_ROOT)) == 0 ||
- (location_decorators ^ (IN_ROOT | IN_ARCHIVE_ROOT)) == 0
- ));
}
! #endif // SHARE_VM_RUNTIME_ACCESS_INLINE_HPP
static FunctionPointerT resolve_barrier() {
return resolve_barrier_rt();
}
};
! // Step 5.a: Barrier resolution
// The RuntimeDispatch class is responsible for performing a runtime dispatch of the
// accessor. This is required when the access either depends on whether compressed oops
// is being used, or it depends on which GC implementation was chosen (e.g. requires GC
// barriers). The way it works is that a function pointer initially pointing to an
// accessor resolution function gets called for each access. Upon first invocation,
// it resolves which accessor to be used in future invocations and patches the
// function pointer to this new accessor.
template <DecoratorSet decorators, typename T>
! void RuntimeDispatch<decorators, T, BARRIER_STORE>::store_init(void* addr, T value) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_STORE>::resolve_barrier();
! _store_func = function;
! function(addr, value);
}
template <DecoratorSet decorators, typename T>
! void RuntimeDispatch<decorators, T, BARRIER_STORE_AT>::store_at_init(oop base, ptrdiff_t offset, T value) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_STORE_AT>::resolve_barrier();
! _store_at_func = function;
! function(base, offset, value);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_LOAD>::load_init(void* addr) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_LOAD>::resolve_barrier();
! _load_func = function;
! return function(addr);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_LOAD_AT>::load_at_init(oop base, ptrdiff_t offset) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_LOAD_AT>::resolve_barrier();
! _load_at_func = function;
! return function(base, offset);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG>::atomic_cmpxchg_init(T new_value, void* addr, T compare_value) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_CMPXCHG>::resolve_barrier();
! _atomic_cmpxchg_func = function;
! return function(new_value, addr, compare_value);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_ATOMIC_CMPXCHG_AT>::atomic_cmpxchg_at_init(T new_value, oop base, ptrdiff_t offset, T compare_value) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_CMPXCHG_AT>::resolve_barrier();
! _atomic_cmpxchg_at_func = function;
! return function(new_value, base, offset, compare_value);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG>::atomic_xchg_init(T new_value, void* addr) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_XCHG>::resolve_barrier();
! _atomic_xchg_func = function;
! return function(new_value, addr);
}
template <DecoratorSet decorators, typename T>
! T RuntimeDispatch<decorators, T, BARRIER_ATOMIC_XCHG_AT>::atomic_xchg_at_init(T new_value, oop base, ptrdiff_t offset) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ATOMIC_XCHG_AT>::resolve_barrier();
! _atomic_xchg_at_func = function;
! return function(new_value, base, offset);
}
template <DecoratorSet decorators, typename T>
! bool RuntimeDispatch<decorators, T, BARRIER_ARRAYCOPY>::arraycopy_init(arrayOop src_obj, arrayOop dst_obj, T *src, T* dst, size_t length) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_ARRAYCOPY>::resolve_barrier();
! _arraycopy_func = function;
! return function(src_obj, dst_obj, src, dst, length);
}
template <DecoratorSet decorators, typename T>
! void RuntimeDispatch<decorators, T, BARRIER_CLONE>::clone_init(oop src, oop dst, size_t size) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_CLONE>::resolve_barrier();
! _clone_func = function;
! function(src, dst, size);
}
template <DecoratorSet decorators, typename T>
! oop RuntimeDispatch<decorators, T, BARRIER_RESOLVE>::resolve_init(oop obj) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_RESOLVE>::resolve_barrier();
! _resolve_func = function;
! return function(obj);
}
template <DecoratorSet decorators, typename T>
! bool RuntimeDispatch<decorators, T, BARRIER_EQUALS>::equals_init(oop o1, oop o2) {
! func_t function = BarrierResolver<decorators, func_t, BARRIER_EQUALS>::resolve_barrier();
! _equals_func = function;
! return function(o1, o2);
}
}
! #endif // SHARE_OOPS_ACCESS_INLINE_HPP
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